• We mistakenly attributed a comment in the article “Bug-based sensors raise the fire alarm” (7 August, p 20) to Dan Lang of the California Department of Forestry and Fire Protection in Sacramento. We wrote: “Lang envisions hundreds of cheap ‘beetle-based’ sensors being deployed throughout forests, perhaps with wireless links to a central computer, to automatically monitor the outbreak of fires.” This was not Lang’s vision, but that of Helmut Schmitz, who designed the sensor.
